A simple and robust technique to retrieve effective refractive index of heterogeneous dielectrics for millimeter-wave applications

Abdul Aziz*, Ladislau Matekovits, Aldo De Sabata

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

2 Citations (Scopus)

Abstract

In this paper a simple methodology to retrieve the effective refractive index of a heterogeneous dielectric substrate is proposed. The host dielectric material is filled with small spherical dielectric inclusions which are arranged in a cubic lattice to form a heterogeneous dielectric. The proposed technique relies on the determination of the dispersion diagram (DD) of a unit cell that consists of a dielectric cube with a dielectric spherical inclusion at its center. The inhomogeneous substrate results from a 3D periodic repetition of the unit cell. Since only waves those propagate parallel to one of the faces of the unit cell are considered, the DD is 2D. The DD is then restricted to the spectral triangle that borders the irreducible first Brillouin zone, due to the symmetry of the structure. The effective refractive index can readily be determined through the slope of the DD, without using scattering parameters.

Original languageEnglish
Title of host publication2015 Computational Electromagnetics International Workshop, CEM 2015
Place of PublicationPicastaway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages20-21
Number of pages2
ISBN (Electronic)9781467371971, 9781467371964
ISBN (Print)9781467392792, 9781467371988
DOIs
Publication statusPublished - 2 Sep 2015
Externally publishedYes
EventComputational Electromagnetics International Workshop, CEM 2015 - Izmir, Turkey
Duration: 1 Jul 20154 Jul 2015

Other

OtherComputational Electromagnetics International Workshop, CEM 2015
CountryTurkey
CityIzmir
Period1/07/154/07/15

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